chemistry

Suppose you are asked to find the area of a rectangle that is 2.1-cm \rm cm wide by 5.6-cm \rm cm long. Your calculator answer would be 11.76 cm 2 \rm cm^2 . Now suppose you are asked to enter the answer to two significant figures. (Note that if you do not round your answer to two significant figures, your answer will fall outside of the grading tolerance and be graded as incorrect.)

Enter your answer to two significant figures and include the appropriate units.

  1. 👍 0
  2. 👎 0
  3. 👁 3,612
  1. I think this is more a math than a chemistry question but the answer to two significant figures is 12 cm^2.

    1. 👍 0
    2. 👎 0
  2. To calculate an answer to the correct number of significant figures, you must complete all calculations first and then round your final answer as the very last step. In Part C, you are asked to calculate the volume of a rectangular prism that has a length of 5.6 cm \rm cm, a width of 2.1 cm \rm cm, and a height of 6.6 cm \rm cm. You can calculate the volume of a prism by multiplying the area of the base times the height. You already calculated the area of the base as 2.1cm×5.6cm \rm 2.1\;cm \times 5.6\;cm in Part A.

    1. 👍 0
    2. 👎 0
  3. 12

    1. 👍 0
    2. 👎 1
  4. What value should you use as the area of the base when calculating the answer to Part C?

    1. 👍 0
    2. 👎 0
  5. 11.76

    1. 👍 0
    2. 👎 0
  6. ffa

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. maths

    the length of a rectangle is 4 times than its width. the area of the rectangle is 1024cm2 find the length of the rectangle the perimeter of the rectangle 4 square has the same perieter as that its rectangle. Find the area of the

    asked by kareena on June 12, 2017
  2. calculus

    A rectangle with its base on the x-axis is to be inscribed under the graph of y=2-x^2. Find the height of the rectangle if the area is the largest possible area. (Round to the nearest hundreth)

    asked by Sarah on November 13, 2011
  3. Math

    1. A gardener has 140 feet of fencing to fence in a rectangular vegetable garden. Find the dimensions of the largest area he can fence. Find the possible rectangular area he can enclose. 2. Suppose a farmer has a large piece of

    asked by Regina on August 13, 2014
  4. math

    One side of the rectangle lies along the line 4x+7y+5=0 , two of its vertices are (-3,1)and (1,1). find (i) the equations of the other three sides. (ii) the angle between the two diagonals of the rectangle . (iii) the area of the

    asked by Nora on December 27, 2011
  1. Algebra I

    Rectangle ABCD has vertices C and d on the x-axis and vertices A and B on part of the parabola y = 9 - x^2 that is above the x-axis. a.) Find the coordinates of A, B, C, and D in terms of x. b.) Determine the Area of the rectangle

    asked by Kate on July 28, 2010
  2. Algebra

    The rectangle shown has a perimeter of 118 cm and the given area. Its length is 4 more than four times its width. Write and solve a system of equations to find the dimensions of the rectangle. (rectangle has an area of 528 cm^2)

    asked by Leah on November 7, 2019
  3. Math

    The length of rectangle A is 1/3 the length of rectangle B.The width of rectangle A is twice the width of rectangle B.Find the ratio of the area of rectangle A to the area of rectangle B.

    asked by Chase on October 15, 2016
  4. math

    a house has two rooms of equal area. one room is square and the other room a rectangle, four feet narrower and 5ft longer than the square one. find the area of each room? let x = dimensions of the square. Rectangle then is x-4 and

    asked by mary-beth on November 29, 2006
  1. coordinate algebra

    The area of a rectangle is found by multiplying the length by the width: A = lw. A certain rectangle has an area of x2 + 7x + 12. Factor the trinomial to find the length and width of the rectangle. In the form of a paragraph,

    asked by chelsea on December 2, 2014
  2. geometry

    The diagonal of a rectangle is 25 meters long makes an angle of 36 ° with one of the rectangle. Find the area and the perimeter of the parallelogram. how to find the b to arrive to the area?

    asked by jaime on March 2, 2017
  3. geometry

    The width of a rectangle is 6 cm less than its length. If the area of the rectangle is 135 square cm, find the dimensions. Then find the perimeter of the rectangle.

    asked by jay on November 15, 2011
  4. Algebra

    The length of a rectangle is 8 ft less than three times the width, and the area of the rectangle is 35 ft2 . Find the dimensions of the rectangle.

    asked by John on January 2, 2015

You can view more similar questions or ask a new question.